am·or·tize (ămər-tīz′, ə-môr-)
tr.v. am·or·tized, am·or·tiz·ing, am·or·tiz·es
1. To liquidate (a debt, such as a mortgage) by installment payments or payment into a sinking fund.
2. To write off an expenditure for (an asset, especially an intangible one, such as a patent) by prorating over a certain period, usually the expected duration of the asset's benefit.
[Middle English amortisen, to alienate in mortmain, from Old French amortir, amortiss-, from Vulgar Latin *admortīre, to deaden : Latin ad-, ad- + Latin mors, mort-, death; see mer- in the Appendix of Indo-European roots.]
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Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.